Li-intercalation into hexagonal boron nitride |
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| Authors: | A. Sumiyoshi H. Hyodo K. Kimura |
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| Affiliation: | Department of Advanced Materials Science, The University of Tokyo, Kiban-toh 502, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8561, Japan |
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| Abstract: | A Li hexagonal boron nitride (hBN) intercalation compound (Li-hBNIC) was successfully synthesized by the annealing of powder or bulk hBN and Li at 1523 K. By an XRD analysis, a strong peak indicating the expansion of BN interlayer distance due to Li-intercalation was observed at an angle lower than that of hBN (0 0 2). In the sample, the interlayer distance and its expansion ratio were 3.76 Å and 12.6%, respectively, and these values were similar to those of a first stage Li-graphite intercalation compound (Li-GIC), LiC6. The electrical conductivity of the sample was increased by several orders of magnitude, from 10−15 to 10−7 Ω−1 cm−1 at room temperature. Li de-intercalation was confirmed by the dispersion of the sample in purified water. |
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| Keywords: | A. Multilayers C. X-ray diffraction D. Crystal structure D. Electrical conductivity |
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